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Preparation and characterization of polyethyleneimine functionalized magnetic graphene oxide as high uptake and fast removal for Hg (II).
Water Sci Technol. 2022 Sep; 86(6):1373-1387.WS

Abstract

Polyethyleneimine functionalized magnetic graphene oxide adsorbent (PEI-mGO) was synthesized by introducing polyethyleneimine onto Fe3O4/graphene oxide. The structures and morphologies of PEI-mGO was identified by using Fourier-tranform infrared (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) methods. Quantities of bar-like Fe3O4 nanoparticles were observed on the surfaces of PEI-mGO. The adsorption of PEI-mGO for Cu(II), Pb(II), Hg(II), Co(II) and Cd(II) was compared. The adsorption results indicated that PEI-mGO showed higher uptake for Hg(II) than the other ions. The influence of various variables for the adsorption of Hg(II) on PEI-mGO was explored. The adsorption kinetics and isotherm could be described well by the pseudo-second-order and Langmuir models. The maximal uptake of PEI-mGO for Hg(II) from Langmuir model was 857.3 mg g-1, which was higher than that reported previously. The adsorption removal was a fast and endothermic process governed by the chemical process. The uptake increased with increasing temperature. PEI-mGO showed an excellent performance for removal of Hg(II) with 93.3% removal efficiency from simulated wastewater. Adsorption-desorption cycled experiments indicated that PEI-mGO could be recycled. PEI-mGO could be easily separated from the adsorbed solution by using a magnet. Hence, this novel adsorbent would be promising for the removal of Hg(II) from wastewater.

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Authors+Show Affiliations

Wang D
College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China E-mail: chhcge@scut.edu.cn.
Ge H
College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China E-mail: chhcge@scut.edu.cn.

MeSH

AdsorptionCadmiumGraphiteIonsKineticsLeadMagnesium OxideMagnetic PhenomenaMercuryPolyethyleneimineSpectroscopy, Fourier Transform InfraredWastewaterWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36178812

Citation

Wang, Deqi, and Huacai Ge. "Preparation and Characterization of Polyethyleneimine Functionalized Magnetic Graphene Oxide as High Uptake and Fast Removal for Hg (II)." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 86, no. 6, 2022, pp. 1373-1387.
Wang D, Ge H. Preparation and characterization of polyethyleneimine functionalized magnetic graphene oxide as high uptake and fast removal for Hg (II). Water Sci Technol. 2022;86(6):1373-1387.
Wang, D., & Ge, H. (2022). Preparation and characterization of polyethyleneimine functionalized magnetic graphene oxide as high uptake and fast removal for Hg (II). Water Science and Technology : a Journal of the International Association On Water Pollution Research, 86(6), 1373-1387. https://doi.org/10.2166/wst.2022.289
Wang D, Ge H. Preparation and Characterization of Polyethyleneimine Functionalized Magnetic Graphene Oxide as High Uptake and Fast Removal for Hg (II). Water Sci Technol. 2022;86(6):1373-1387. PubMed PMID: 36178812.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation and characterization of polyethyleneimine functionalized magnetic graphene oxide as high uptake and fast removal for Hg (II). AU - Wang,Deqi, AU - Ge,Huacai, PY - 2022/9/30/entrez PY - 2022/10/1/pubmed PY - 2022/10/5/medline SP - 1373 EP - 1387 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci Technol VL - 86 IS - 6 N2 - Polyethyleneimine functionalized magnetic graphene oxide adsorbent (PEI-mGO) was synthesized by introducing polyethyleneimine onto Fe3O4/graphene oxide. The structures and morphologies of PEI-mGO was identified by using Fourier-tranform infrared (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) methods. Quantities of bar-like Fe3O4 nanoparticles were observed on the surfaces of PEI-mGO. The adsorption of PEI-mGO for Cu(II), Pb(II), Hg(II), Co(II) and Cd(II) was compared. The adsorption results indicated that PEI-mGO showed higher uptake for Hg(II) than the other ions. The influence of various variables for the adsorption of Hg(II) on PEI-mGO was explored. The adsorption kinetics and isotherm could be described well by the pseudo-second-order and Langmuir models. The maximal uptake of PEI-mGO for Hg(II) from Langmuir model was 857.3 mg g-1, which was higher than that reported previously. The adsorption removal was a fast and endothermic process governed by the chemical process. The uptake increased with increasing temperature. PEI-mGO showed an excellent performance for removal of Hg(II) with 93.3% removal efficiency from simulated wastewater. Adsorption-desorption cycled experiments indicated that PEI-mGO could be recycled. PEI-mGO could be easily separated from the adsorbed solution by using a magnet. Hence, this novel adsorbent would be promising for the removal of Hg(II) from wastewater. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/36178812/Preparation_and_characterization_of_polyethyleneimine_functionalized_magnetic_graphene_oxide_as_high_uptake_and_fast_removal_for_Hg__II__ DB - PRIME DP - Unbound Medicine ER -